Analysis

  • max time kernel
    119s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    22-04-2024 14:33

General

  • Target

    tmp.exe

  • Size

    48KB

  • MD5

    d65c7a3cb25eb79571854b5fab17be35

  • SHA1

    6c980e0357dea99771704f3f122d369d90fefd5f

  • SHA256

    7d693069636a46d7d430ced104854e7a19da09fc0b1e9c43e6ac55ab52bd8eea

  • SHA512

    bcd1a7598f1740e3838592c4a853e04caa78709a98454be0f8ab7cc2a4973c12e639192f676504ee97c7cbc6e34278011d998656ac8f81dccfc56e7455eb7678

  • SSDEEP

    768:zynb12Aw5J6HC4kq5Jp9bjAzhyY55J+NStcEeUlyqgZl4p67VhPC:Ub1MsHz3JDwhyWr+N95OTga6u

Malware Config

Signatures

  • RunningRat

    RunningRat is a remote access trojan first seen in 2018.

  • Sets DLL path for service in the registry 2 TTPs 1 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 7 IoCs
  • Creates a Windows Service
  • Drops file in System32 directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 6 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    1⤵
    • Sets DLL path for service in the registry
    • Loads dropped DLL
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2312
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 1 && del /f/q "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1132
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 1
        3⤵
        • Runs ping.exe
        PID:2648
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe -k "SICK"
    1⤵
      PID:2276
    • C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe -k "SICK"
      1⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:1064
      • C:\Windows\SysWOW64\SICK.exe
        C:\Windows\system32\SICK.exe "c:\windows\system32\259423609.dll",MainThread
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:2508

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • \Windows\SysWOW64\259423609.dll

      Filesize

      25KB

      MD5

      aa4ed83fc3f6255e1617fe39541fb1f4

      SHA1

      945c3ae4cb8eca8d2410a7e0cd4e30f27d76c1fb

      SHA256

      8060755c7df499ccce82afa6adc0086c38540a01d2fb0b72b2488edcbe24e984

      SHA512

      dcf5b167eda97c1a20397742851e676c0272354879d80646e8c0d4e9c5042b678bb44edd2e42825afc328becd31b75695c6adbca31e7c5c941e8923965ab30c2

    • \Windows\SysWOW64\SICK.exe

      Filesize

      43KB

      MD5

      51138beea3e2c21ec44d0932c71762a8

      SHA1

      8939cf35447b22dd2c6e6f443446acc1bf986d58

      SHA256

      5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

      SHA512

      794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d